WebApr 20, 2024 · The maximum absorption wavelength of gallic acid was determined to be 765 nm from these spectra and a calibration curve of gallic acid was prepared at 765 nm. The total phenolic content of endemic Asparagus lycicus plant was calculated by using gallic acid calibration curve (Spanos and Wrolstad 1990). WebTrolox® and/or gallic acid. Calibration curves were determined (relative standard deviation was within the range from 1.5 to 2.5 %). The obtained characteristics were compared and discussed. Moreover, the data obtained were applied to optimize and to automate all mentioned protocols. Automatic analyzer allowed us to analyse …
Molecules Free Full-Text Polyphenolic Composition, Antioxidant …
Weby = 0.003x, R² = 0.97 obtained from the calibration curve of Gallic acid standard. Percentage of yield of the twig extracts was found to be 0.34876mgGAe/g of sample. Table 2. Comparison of Total Phenolic content of Sample at Five Different Concentrations with the Standard. Gallic Acid (Standard) Absorbance 100 0.15 200 0.72 300 1.15 400 1.55 Websolvent. Gallic acid was used as standard. The calibration curve was plotted using standard gallic acid. The data for total phenolic contents of polyherbal formulation were … kiss mlbb lashes blessed
Determination of total phenol and flavonoid levels and antioxidant ...
WebOct 7, 2011 · The exact reasons of choosing Gallic acid as a standard are: -Partly for historical reasons, -Inexpensive, -Soluble in water, -Recrystallized easily from water, … WebApr 9, 2024 · Phenolic compounds are frequently present in various natural products, and they can have different beneficial biological potentials. The most widely used method for determination of individual phenolic compounds is high-performance liquid chromatography (HPLC). In this paper, a method for simultaneous determination of 16 phenolic … Webmg/ml. Total phenolic concentration was expressed in terms of gallic acid (Sharma et.al., 2011; Greeshma et.al.,2012). Preparation of standard gallic acid curve Gallic acid stock solution (1000 µg/ml) was prepared by dissolving 100 mg of gallic acid in 100 ml of ethanol. Various dilutions of standard gallic acid in the range 1 – 100 µg/ml were m1 carbine mag catch types